Question: Consider two rigid containers each of volume 1 m3 containing air at 100 kPa, 400 K. An internally reversible Carnot heat pump is then thermally

Consider two rigid containers each of volume 1 m3 containing air at 100 kPa, 400 K. An internally reversible Carnot heat pump is then thermally connected between them so it heats one up and cools the other down. In order to transfer heat at a reasonable rate, the temperature difference between the working substance inside the heat pump and the air in the containers is set to 20C. The process stops when the air in the coldest tank reaches 300 K. Find the final temperature of the air that is heated up, the work input to the heat pump, and the overall second-law efficiency.

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